From: Scott Morris (swm@emanon.com)
Date: Wed Jul 14 2004 - 14:07:16 GMT-3
Only if you are running Arcnet someplace still in your topology...
And if your service provider is still running Arcnet, run... Run fast. :)
Otherwise, if you have specific knowledge on your SPs queuing mentality and
have reason to believe that'll help... But don't forget you are stressing
your edge router out too!
Your mileage may vary though, so.... But it's likely not a router issue.
:)
Scott
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Anthony Pace
Sent: Wednesday, July 14, 2004 12:55 PM
To: ccielab@groupstudy.com
Subject: Does anyone reduce MTU size to 576 on Internet routers?
I work for a company that has Servers on the Internet. It has been suggested
that we reduce the MTU size on our Internet routers to 576.The rational is
that some routers might not support a larger size, therefore, by picking
this lowest common denominator, we insure that everyone will have a great
experience. It has also been suggested that many ISP's will treat the
smaller packets with a higher priority.
I do not think this makes sense, I have only seen problems with MTU, when
using applications which set the don't fragment bit, and that was through
a VPN. These were my thoughts:
- The client and server should negotiate MTU size, so wouldn't it make more
sense to reduce it on the server's themselves, if this is really a concern?
- Doesn't putting the same data in 3 packets instead of 1 reduce the
header/payload ratio?
- If a router cant support the MTU, won't it just fragment the packet?
(most apps don't set the "no fragment" bit)
Does anyone have experience or knowledge one-way or the other? I cant find
anything in my searches that really bears this out.
Anthony Pace CCIE10349
-- Anthony Pace anthonypace@fastmail.fm
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